/* //公共样式 */
html,
body {
    width: 100%;
    height: 100%;
}

body {
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
    overflow-y: scroll;
    overflow-x: hidden;
}

/* //图片底部三像素 */
img {
    vertical-align: botttom;
}

/* //尾部 */
.footer-nav {
    height: 70px;
    background: #fff;
    display: flex;
    justify-content: space-around;
    align-items: center;
    box-shadow: 0px 0px 10px 0px #ccc;

}

.footer-nav a {
    display: flex;
    flex-direction: column;
    align-items: center;
    color: #ccc;
}

.footer-nav i {
    font-size: 30px;
}

.footer-nav a.blue {
    color: #69a1f8;
}

/* //头部导航 */
.header-nav {
    padding: 10px 30px;
    display: flex;
    justify-content: space-around;
    border-bottom: 1px solid #ccc;
}

.header-nav a {
    color: #888;
    height: 32px;
}
.header-nav a.blue {
    color: #69a1f8;
    border-bottom:2px solid #69a1f8;
}


